Latch structure.



G. J. PARSONS.

LATCH STRUCTURE.

APPLICATION FILED NOV. 13, 1911.

1,042,030, Patented Oct. 22, 1912.

UNITE STATES PATENT OFFICE.

CHARLES J'. PARSONS, OF LINWORTI-I, OHIO, ASSIGNOR TO GEORGE B. IDONAVIN, OF COLUMBUS, OI-IIO.

LATCH STRUCTURE.

Patented Oct. 22, 1912. Serial No. 660,036.

To all 707mm 12. may concern:

Be it known that 1, CHARLES J. PARSONS, a citizen of the United States, residing at Linworth, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Latch Structures. of which the following is a specification.

My invention relates to latch structure for swinging and sliding window sash.

It is designed to be cooperative with an element for positively locking the swinging member to the sliding members of the sash and in such cooperation it constitutes a medium for automatically locking the sliding members to the window frame when the swinging portion of the sash is swung upon its pivots out of normal position.

My aim in the conception and develop ment of this invention is to provide an automatic latch operating under a positive control of an element subject to control by movement of the swinging portion of the sash and desirably carried thereby.

It contemplates the provision of an auto- :ratic latch member carried by the slide members of the sash and comprising a member pivoted at one end and under pressure of a resilient means tending to force the same outwardly against the window frame for catching in notches formed therein. The complemental member to this pivoted latch element, desirably takes the shape of a spring plate of metal carried by the swinging portion of the sash and comprising a means for positively forcing the latch into inoperative position when the swinging portion of the sash is moved into normal position and for forcing such pivoted latch member into operative position when the swinging portion of the sash is swung out of normal position.

The preferred embodiment of my invention is shown in the accompanying drawings, in which similar characters of refer ence designate corresponding parts, and in which Figure 1 is a front elevation of a window structure showing the general type of window to which my invention is applied, Fig. 2 is a cross sectional detail view showing a desirable form of window structure particularly applicable to my invention, Fig. 3 is a longitudinal detail of a window sash showing the coactive relation of the primary form of lock with which my invention is adapted to be used and showing the application of my invention and its relative position upon the window sash under normal conditions, Fig. 4 is an edge view in detail showing the swinging portion of my sash out of normal position and showing the latch element and its complemental member, Fig. 5 is a detail view of the latch element in elevation, Fig. 6 is an edge elevation of the structure shown in Fig. 5, Fig. 7 is a plan view of the complemental member adapted to cooperate with the latch element, such complemental element being shown detached, and, Fig. 8 is a projected view of the structure shown in Fig. 7.

In the drawings, there is shown a window frame 1 having a sliding sash comprised of slide members 2 and a swinging portion 3. This swinging portion desirably carries a laterally swinging lock member 4 constructed to cooperate with a complemental lock member 5 upon the slide members 2, it being understood that this swinging portion 3 is pivoted as at 6 to the slide members. Upon each slide member I desirably mount a plate such as 7 secured by screws 8 and carrying upon its inner surface a latch member 9 pivoted at one end as at 10 and provided upon its other end with a lateral extension 11 extending into juxtaposition to each edge of the swinging sash. This latch member 9 is normally forced outwardly by a coiled spring 12 mounted between such latch and the lug 13. Secured upon the swinging sash in alining position to the lateral extension 11 is a spring plate member 14 having one end secured to the sash by a screw member 15 and having this end provided with a raised portion 16 formed in any desirable manner. Spaced from this raised portion 16 and formed upon the free extremity of the spring plate 14 is a formation 17 of a pyramidal form having its inner surface at a sharp incline as at 18 and its outer surface at a relatively low incline as at 19.

In operation, assuming that the sash is in the position shown in Fig. 4 and that it is desired to close the swinging sash by return to normal position, such movement causes the relatively low inclined surface 19 to contact with the lateral extension 11 and because of the spring structure of this plate 14 to pass by such lateral extension with comparatively no effect. Immediately succeeding such passage of the surface 19, the projection 16 comes in contact with the lateral extension 11 and positively moves the latch member 9 out of operative position. If it is then desired to swing the sash out of normal position, this movement will cause the comparatively sharp inclined surface 18 to abut the lateral extension 11 with suiiicient force to move the latch 9 into operative position, whereupon continued swinging move ment of the sash member 3 causes the free end of the spring plate 14 to escape from such lateral extension and permit complete swinging of the sash. It will thus be seen that I have provided a latch member which is forced into normal position under ordinary circumstances by a coiled spring, but that I am not dependent for the successful operation of my device upon this coiled spring, for the reason that the complemental control for the latch positively withdraws and positively moves the same into operative or inoperative position.

What I claim, is-

1. Latch structure for the slide members of sliding and swinging sashes comprising a latch bar pivotally mounted at one end on the slide member, a spring normally pressing said latch bar into operative position, a lateral projection on the free end of said latch bar, a spring plate fastened at one end to the swinging part, a formation on the free end of said plate of a substantially pyramidal form for engagement with said lateral formation to semi-positively control said latch in one direction upon movement of said swinging part, and a lug spaced therefrom and on the secured end of said plate to control the movement of said latch upon movement of said swinging part in the opposite 419 direction.

2. Latch structure for the slide members of sliding and swinging sashes comprising a latch mounted on the slide member, a spring plate mounted at one end on the swinging part, a formation on the free end. of said spring plate for coaction with said latch to semi-positively control. the latch in one direction upon movement of said swinging part, and a lug spaced therefrom and on the secured end of said plate to control the movement of said latch upon movement of said swinging part in the opposite direction.

8. Latch structure for the slide members of sliding and swinging sashes comprising a latch mounted on the slide member, and a complemental automatic controlling element mounted on the swinging part comprising a spring latch plate for coaction with said first latch to semi-positively control the first latch in one direction upon movement of the swinging part, and a positively eiiective lug on said spring latch plate for coaction with said first latch to positively control the movement of the first latch in the opposite direction upon movement of the swinging part in the opposite direction.

In testimony whereof I atlix my signature in presence of two witnesses.

CHARLES J. PARSONS.

\Vitnesses WALTER E. S. Boon, A. L. Pr-mnrs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

